Machine for cutting cards for automatic embroidering-machines.



J. J. KNECHT.

MACHINE FOR CUTTING GARDS FOR AUTOMATIC EMBROIDERING MACHINES.APPLICATION FILED APR.28,.1911.

- 1,027,256. Patented May 21, 1912.

2 SHEETS-#:HEBT 1.

J. J. KNECHT.

MACHINE FOR CUTTING CARDS FOR AUTOMATIC EMBROIDERING MACHINES.APPLIGATION FILED APR. 28, 1911'.

' 1,027,256. v Pa1tentedMay 21,1912.

2 SHEETS'SHEET 2.

Zlilllt V COLUMBIA PLANOGRAPH co.,wAsHlNGTON, u. c.

I UNITED STATES PATENT OFFICE.

JOI-IANN JACOB KNECHT, F CHEMNITZ, GERMANY.

MACHINE FOR CUTTING CARDS FOR AUTOMATIC EMBROIDERING-MACHINES.

Specification of Letters Patent.

Application filed April 28, 1911.

- Patented May 21, 1912.

Serial No. 623,892.

' which the following is a specification.

. My invention relates to machines for cutting cards for automaticembroidering machines, the punches being drlven into cards guidedbetween two parallel drums, and a primary object is to provlde a machlneof this type in which the punches are mounted displaced relatively toone another in two guide bars arranged parallel to one another betweenthe drums.

In my improved machine the drums themselves rest in displaceablebearings and are connected with driving mechanism, the entirearrangement being such that when the machine is started working, thedrums are alternately moved toward and away from the punches.

One illustrative embodiment of my invention and a modification thereofare represented by way of example in the accompanying drawing, whereinFigure 1 is an end elevatiompartly in section, showing my machine, Fig.2 1s a top plan view, partly in horizontal sectlon, Flg. 3 is a detailplan view, partly in section and Fig. 4 is a diagrammatic View of themodlfication.

Referring firstly to Figs. 1 to 3, the numerals 3, 3 designate the twodrums each having two pivots 15, 15, by means of whloh the drums arejournaled in the guideb-locks 21, 21 slidable in the links 2, 2 whichare I rigidly connected with the pedestals 22.

Fast on the pivots 15 are spur gears 23 meshing with the toothed racks.16 attached at 24, 24 to the known pattern frame comprising the crossedslides 14, '14. These slides are traversed by the guide pin 30 to beguided on the pattern 31 to be punched. The shaft 1, on which twoeccentrlcs 4 are secured, is journaledjin two pedestals 25.

1 Each of these eccentrics has two grooves 34,

35 (Fig. 3); the guide pin 36 of the twoarmed lever 5, 8 is slidable inthe groove 34,

and the guide pin 37 of the two-armed lever 6,7 is slidable in the othergroove 35. These two-armed levers 5, 8 and 6 7 are fulorumed in theframe of the machlne at 38, 39, respectively, and are pivotallyconnected to the rods 9, 10, respectively, which are pivotally connectedwith the guide blocks 21. The other eccentric 4 is connected in similarmanner by levers and rods with the guide blocks 21, 21. The punches 11,11 are displaced relatively to one another; the card or paper 17 guidedat both sides by perforated matrices 18, 18, runs between the punches.The punches are driven int-o these matrices when the appertaining drumsare moved toward the punches. The drums are perforated and arenon-perforated only at those I places where a hole is to be made in thecard. The punches are guided not only in the matrlces 18, 18, but alsoin the bars 26, 26. In order, when the drums return, to cause thepunches also to return, I arrange the guides 27, 27 whose bent ends 28,28 clasp the pivots 15, 15, respectively. The punches 11 extend throughthese guides 27, 27 and. are provided with the collars 29,against whichthe guides abut when the drums move backward and cause the punches toreturn into their original positions.

The above-described machine operates as follows :-As will be understoodfrom Fig. 1, the pin 30 extending through the crossed slides 14, 14 is.guided over the pattern 31, whereby the slides 14, 14 arecorrespondingly raised and lowered and their rectilinear motion istransmitted by means of the racks 16 to the gears 23, whereby the drumsare so rotated that a definite row of holes of each drum is placed infront of the punches.

driven and the motion of the eccentrics 4, 4,

is imparted in such manner by means of the levers and rods 5, 8, 9 and6, 7, 10 to the drums that the pivots 15, 15 of the drums are shifted inthe links 2, 2 toward the punches. When a non-perforated part of thewall of the drum abuts against the displaceable punch, the same ispushed by the drum toward the card and punctures the latter. Aperforation or hole in the drum, on thecontrary, causes the punch toremain at rest. When the drums move in the opposite direction as theeccentrics continue to move, the guides 27 participating in the motionof the drums act against collars 29 of the punches and positively returnthe latter into their normal .position[ Besidesv other functions of themachine as, for example, festooning, perforating, punching, and so on.This is brought about by perforations generally provided at the twosides of the rows of embroidering holes. In order to bring theseso-called special operations into the card, the drums have at each ofthe two ends a definite number of rows of holes which, however, arenowhere interrupted by nonperforated parts. Vhen the hole in question isto be made in the card for the special operation of the embroideringmachine, the lever 19 or 20 in question is tilted, and a cover plate 12is moved over the hole of the drum and drives the punch against thecard.

Referring now to Fig. 4, the modified form here represented differs fromthat described above with reference to Figs. 1 to only by the punchesnot being returned, after the card has been punched, into their originalpositions by guides, but by springs 40 acting against collars 32 of thepunches guided in the bars 18, 26.

I claim 1. In a machine for punching cards for automatic embroideringmachines, the combination with the pattern frame, of two revoluble,parallel, perforated drums mounted horizontally displaceable toward andaway from one another, means driven by the frame for rotating the drums,two pairs of guide bars arranged between and parallel to the drums,punches guided in each pair of guide bars adapted to be driven bynonperforated parts of the appertaining drum, the punches in one of saidpairs of guide bars being displaced relatively to the punches in theother pair of guide bars, and means for alternately moving the drumstoward and away from the punches and thereby driving the punches.

2. In a machine for punching cards for,

automatic embroidering machines, the combination with the pattern frame,of two revoluble, parallel, perforated drums mounted horizontallydisplaceable toward and away from one another, means driven by the framefor rotating the drums, two pairs of guide bars arranged between andparallel to the drums, punches guided in each pair of guide bars adaptedto be driven by nonperforated parts of the appertaining drum, thepunches in one of said pairs of guide bars being displaced relatively tothe punches in the other pair of guide bars, means for alternatelymoving the drums toward and away from the punches and thereby drivingthe punches, and means for returning the punches into their normalposition.

3. In a machine for punching cards for automatic embroidering machines,the combination with the pattern frame, of two revoluble, parallel,perforated drums mounted horizontally displaceable toward and away fromone another, means driven by the frame for rotating the drums, two pairsof guide bars arranged between and parallel to the drums, punches, eachhaving a collar, guided in each pair of guide bars adapted to be drivenby non-perforated parts of the appertaining drum, the punches in one ofsaid pairs of guide bars being displaced relatively to the punches inthe other pair of guide bars, means for alternately moving the drumstoward and away from the punches and thereby driving the punches, andperforated guides traversed by the punches, connected with the drums andadapted to coact with the collars of the punches and return the punchesinto their normal position.

4L. In a machine for punching cards for automatic embroidering machines,the com bination with the pattern frame, of two revoluble, parallel,perforated drums mounted horizontally displaceable toward and away fromone another, means driven by the frame for rotating the drums, two pairsof guide bars arranged between and parallel to the drums, punches guidedin each pair of guide bars adapted to be driven by non-perforated partsof the appertaining drum, the punches in one of said pairs of guide barsbeing displaced relatively to the punches in the other pair of guidebars, a cover plate adapted to be placed between each drum and theappertaining punches, and means for alternately moving the drums towardand away from the punches and thereby driving the punches.

5. In a machine for punching cards for automatic embroidering machines,the combination with the pattern frame, of two revoluble, parallel,perforated drums mounted horizontally displaceable toward and away fromone another, means driven by the frame for rotating the drums, two pairsof guide bars arranged between and parallel to the drums, punches guidedin each pair of guide bars adapted to be driven by non-perforated partsof the appertaining drum, the punches in one of said pairs of guide barsbeing displaced relatively to the punches in the other pair of guidebars, means for alternately moving the drums toward and away from thepunches and thereby driving the punches, and means connected with thedrums for positively returning the punches into .their normal position.

In testimony whereof, I affix my signature in the presence of twowitnesses.

JOI-IANN JACOB KNECHT.

Witnesses:

LUDWIG ZIEGLER, WM. WASHINGTON BRUNSWICK.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

